Question

有没有办法在跳过列表中的1个指定函数的同时从另一个方法运行方法中的函数列表？

例如，我有contentList方法：

def contentList(self):  
    methods = [self.title, self.containerDIV, self.heading, self.stopSection, self.offlineSection, self.onlineSection, self.endDIV, self.otherImages]
    for m in methods:
        m()
def test(self):
    self.contentList()
    # skip over stopSection

有没有办法在跳过或不运行self.stopSection时从测试方法运行这些方法？

更新

以下是我正在尝试的内容：

#**************************** BEGIN OF HTML CONTENT ****************************

    def title(self):
        self.wfile.write(bytes("<div id='title'><img src='../images/title.png'></div>", "utf8"))

    def containerDIV(self):
        self.wfile.write(bytes("<div id='container'", "utf8"))

    def endDIV(self):
        self.wfile.write(bytes("</div>", "utf8"))

#**************************** END OF HTML CONTENT ****************************

    def contentList(self, skip_name):  # All content functions in list 
        methods = [self.title, self.containerDIV, self.endDIV]
        for m in methods:
            if m.__name__ != skip_name:
                m()


    def narrow(self):
        try:
            self.contentList('title')   # removed title
            return          

    # GET
    def do_GET(self):
        try:
            self.contentList('none')  # I added none here because I want to keep title
            return

Answer 1

根据您的范围，您可以在执行之前临时更改函数的定义。

全球范围

    def t1():
        print('t1')

    def t2():
        print('t2')

    def contentList():
        methods = [t1, t2]
        for m in methods:
            m()
    def test():
        global t1
        def fake(): pass

        temp = t1
        t1 = fake
        contentList()
        t1 = temp

    test()

班级范围

def test(self):
    def fake(): pass
    temp = self.stopSection
    self.stopSection = fake
    self.contentList()
    self.stopSection = temp

Answer 2

您可以通过__name__属性检查功能名称。因此，在您的情况下，您可以执行以下操作：

class SomeClass:
    def contentList(self, skip_method_name):  
        methods = [self.title, self.containerDIV, self.heading, self.stopSection, self.offlineSection, self.onlineSection, self.endDIV, self.otherImages]
        for m in methods:
            if m.__name__ != skip_method_name:
                m()

    def test(self):
        self.contentList('stopSection')

让我提供一个更简洁的例子

class SomeClass:
    def method_a(self):
        print('method_a')

    def method_b(self):
        print('method_b')

    def method_runner(self, skip_name):
        for m in [self.method_a, self.method_b]:
            if m.__name__ != skip_name:
                m()

样本用法：

>>> some_obj = SomeClass()
>>> some_obj.method_runner('')
method_a
method_b
>>> some_obj.method_runner('method_a')
method_b
>>> some_obj.method_runner('method_b')
method_a

正如@Jeronimo所指出的那样，我们可以使用method_runner方法中的实际函数并完全绕过__name__调用。使用这个方法我的例子如下：

class SomeClass:
    def method_a(self):
        print('method_a')

    def method_b(self):
        print('method_b')

    def method_runner(self, skip_method):
        for m in [self.method_a, self.method_b]:
            if m != skip_method:
                m()

示例用法：

>>> some_obj = SomeClass()
>>> some_obj.method_runner(None)
method_a
method_b
>>> some_obj.method_runner(some_obj.method_a)
method_b
>>> some_obj.method_runner(some_obj.method_b)
method_a

除指定的函数外，在列表中运行函数

2 个答案: